Difference between revisions of "CSS: Basics"

(id and class, fixed header div)
Line 35: Line 35:
 
</ul>
 
</ul>
 
===Styling the Div Element===
 
===Styling the Div Element===
When styling a div element, you have to put a # or div# in front of the element. For example
+
When styling a div element, you have to specify which element you are styling. If you are working with a div, you can optionally put div in front (if you are working with a span, then put a span, etc.). To specify an element by id, put # then the id, and to specify an element by class, put a period (a .) then the class. For example
 
<code>#header{background:green;}</code>
 
<code>#header{background:green;}</code>
 
will make the header look something like this
 
will make the header look something like this
<div style="background:green;width:700px;height:80px;"><div>
+
<div style="background:green;width:700px;height:80px;">Header Text</div>
 +
The tag that was modified would be
 +
<code><div style="background:green;width:700px;height:80px;" id="header">Header Text<div></code>

Revision as of 22:36, 8 January 2012

Syntax

As mentioned beforehand, the CSS syntax is

element { property: value; }

After evert property:value statement, there must be a semicolon, a ";". The last statement in an element does not require a semicolon, but it is a good practice to do so anyway.

CSS ignores whatever whitespace, so you can write CSS many ways:

element{property:value;} element { property:value; } etc.

However, it is a good practice to do it the first way; it's more readable, and it's easy to organize and edit.

Elements Usually Edited With CSS In AoPS User Blogs

The body element

In the AoPS User Blogs, the body element is most commonly modified for the:

  • Background Image/Color
  • Font used generally in the entries and sidebar

Modifying the Background

The two most common things done to the background of an AoPS User Blog are setting a background image or color. Some of the most commonly used properties for a background image:

  • background-image
  • background-attachment
  • background-position

Styling the Div Element

When styling a div element, you have to specify which element you are styling. If you are working with a div, you can optionally put div in front (if you are working with a span, then put a span, etc.). To specify an element by id, put # then the id, and to specify an element by class, put a period (a .) then the class. For example #header{background:green;} will make the header look something like this

Header Text

The tag that was modified would be